Production method of high-gloss and high-covering-capability rutile titanium dioxide

A rutile-type titanium dioxide, production method technology, applied in the directions of titanium dioxide, titanium oxide/hydroxide, etc., can solve the problems of affecting gloss, low affinity, and insignificant improvement of gloss, and achieve gloss and cover. Power-enhancing, gloss-enhancing, high-hiding effects

Active Publication Date: 2013-02-20
SICHUAN LOMON TITANIUM IND CO LTD
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  • Summary
  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

In the above three patents, due to the introduction of phosphate strong polar ions in the coating treatment, the affinity with the weak polarity ink resin in the ink resin is not high, so the gloss improvement in the ink system is not obvious
[0005] Chinese patent application CN101885926A discloses a production method for manufacturing high-hiding titanium dioxide. The patent mainly processes silicon dioxide and aluminum oxide on the surface of titanium dioxide. The hiding power of titanium dioxide can be improved by controlling the pine degree of silicon dioxide, but the specific surface area of ​​titanium dioxide is increased due to the introduction of silicon dioxide treatment of vegetable pine, which affects the gloss of titanium dioxide
At the same time, silica is also hydrophilic, and has poor affinity with oily resins in inks, which further affects gloss

Method used

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  • Production method of high-gloss and high-covering-capability rutile titanium dioxide

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preparation example Construction

[0031] The preparation method of the high-gloss, high-covering titanium dioxide of the present embodiment comprises the following main steps:

[0032] (1) Prepare metatitanic acid slurry: weigh 2700g deionized water, add 1000g metatitanic acid, and stir evenly;

[0033] (2) Add 15.4g magnesium sulfate heptahydrate (MgO and TiO 2 The mass percentage is about 0.25%), stir evenly;

[0034] (3) Add 18.4g zirconium sulfate (ZrO 2 with TiO 2 The mass percentage is about 0.8%), stir evenly;

[0035] (4) Add 4.4g potassium carbonate (K 2 O and TiO 2 The mass percentage is about 0.3%), stir evenly;

[0036] (5) The metatitanic acid slurry treated above is subjected to pressure filtration and calcined at 950 degrees to obtain the primary titanium dioxide slurry, which is pulverized by a grinder, and 1190g of deionized water is added to make 700g / L Titanium dioxide slurry, and then sanded with a sand mill, so that the titanium dioxide reaches the original parti...

Embodiment 2

[0041] The preparation method of the high-gloss, high-covering titanium dioxide of the present embodiment comprises the following main steps:

[0042] (1) Prepare metatitanic acid slurry: weigh 2700g deionized water, add 1000g metatitanic acid, and stir evenly;

[0043] (2) Add 6.3g of magnesium carbonate (after adding MgO and TiO in the metatitanic acid slurry 2 The mass percentage is about 0.3%), stir evenly;

[0044] (3) Add 7.6g zirconium chloride (ZrO 2 TiO in metatitanic acid slurry 2 The mass percentage is about 0.4%), stir evenly;

[0045] (4) Add 2.4g potassium hydroxide (K 2 O and TiO in metatitanic acid slurry 2 The mass percentage is about 0.2%), stir evenly;

[0046] (5) The metatitanic acid slurry treated above is subjected to pressure filtration and calcined at 950 degrees to obtain the primary titanium dioxide slurry. The primary product is pulverized by a grinder, and 1190g of deionized water is added to make 700g / L titanium dioxide powde...

Embodiment 3

[0051] The preparation method of the high-gloss, high-covering titanium dioxide of the present embodiment comprises the following main steps:

[0052] (1) Prepare metatitanic acid slurry: weigh 2700g deionized water, add 1000g metatitanic acid, and stir evenly;

[0053] (2) Add 6g of magnesium oxide (after adding MgO and TiO in the metatitanic acid slurry 2 The mass percentage is about 0.6%), stir evenly;

[0054] (3) Add 16.5g zirconium nitrate (ZrO 2 TiO in metatitanic acid slurry 2 The mass percentage is about 0.6%), stir evenly;

[0055] (4) Add 4.8g potassium hydroxide (K 2 O and TiO in metatitanic acid slurry 2 The mass percentage is about 0.4%), stir evenly;

[0056] (5) The above-mentioned metatitanic acid slurry is filtered and calcined at 950 degrees to obtain the primary product of titanium dioxide, which is pulverized by a grinder, and 1190g of deionized water is added to make a 700g / L titanium dioxide slurry , and then sanded with a sand mil...

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Abstract

The invention discloses a production method of high-gloss and high-covering-capability rutile titanium dioxide. The production method comprises the steps of preparing metatitanic acid slurry, sequentially adding a magnesium-containing compound, a zirconium-containing compound and a potassium-containing compound to prepare titanium dioxide primary slurry, then sequentially adding a titanium-containing compound and an aluminum-containing compound, and finally filtering, washing, drying and crushing to obtain high-gloss and high-covering-capability rutile titanium dioxide. According to the production method, saline matters such as magnesium salt, zircon salt, kali salt and the like are added in metatitanic acid, so that the effect of improving the high covering property of titanium dioxide can be achieved; and the surface treatments of hydration of titanium dioxide and hydration of titanium dioxide, and the like can be conducted on the surface of titanium dioxide, so that the effect of improving the gloss of titanium dioxide can be achieved, and the gloss and the covering capability of titanium dioxide are all improved greatly.

Description

technical field [0001] The invention relates to a production method of titanium dioxide, in particular to a production method of high gloss and high covering rutile titanium dioxide. Background technique [0002] Titanium dioxide pigment is an excellent white pigment, which has the advantages of high whiteness, high opacity, stable physical and chemical properties, etc., and is widely used in coatings, plastics, inks and other industries. [0003] As one of the application fields of titanium dioxide pigment, titanium dioxide for ink has high requirements on gloss and hiding power. The ink layer is thinner than ordinary coatings, often only a few microns thick. Therefore, such a thin ink layer needs to be made To high gloss and high hiding, this puts forward high quality requirements for titanium dioxide. [0004] Patent EP0406194 discloses a production method for producing high gloss and high weather resistance titanium dioxide. This patent mainly uses zirconium, phosphoru...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G23/08
Inventor 杜国华朱全芳周春勇钟晓英林发蓉熊怀忠
Owner SICHUAN LOMON TITANIUM IND CO LTD
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